A diphyodont is any animal with two sets of teeth, initially the deciduous set and consecutively the permanent set.[1][2][3] Most mammals are diphyodonts—as to chew their food they need a strong, durable and complete set of teeth.
Diphyodonts contrast with polyphyodonts, whose teeth are constantly replaced. Diphyodonts also differ from monophyodonts, which are animals who have only one set of teeth that do not change over a long period of growth. [4]
In diphyodonts, the number of teeth that are replaced varies from species to species. In humans, a set of twenty deciduous teeth, or "milk teeth", are replaced by a completely new set of thirty-two adult teeth. In some cases hypodontia or hyperdontia occurs, the latter in cleidocranial dysostosis and Gardner's syndrome. In the hare the anterior incisors are not replaced but the posterior smaller incisors are replaced.
Not much is known about the developmental mechanisms regulating diphyodont replacement. The house shrew, Suncus murinus, and the Chinese miniature pig[5][6] are currently being used to study the diphyodont replacement of the deciduous dentition by replacements and additional permanent teeth.
^Buchtova, M.; Stembirek, J.; Glocova, K.; Matalova, E.; Tucker, A. S. (2012). "Early Regression of the Dental Lamina Underlies the Development of Diphyodont Dentitions". Journal of Dental Research. 91 (5): 491–498. doi:10.1177/0022034512442896. PMID 22442052.
^Myers, P., R. Espinosa, C. S. Parr, T. Jones, G. S. Hammond, and T. A. Dewey (2013) Milk teeth and the replacement of teeth. The Animal Diversity Web.
diphyodont, diphyodont, animal, with, sets, teeth, initially, deciduous, consecutively, permanent, most, mammals, diphyodonts, chew, their, food, they, need, strong, durable, complete, teeth, contrast, with, polyphyodonts, whose, teeth, constantly, replaced, a. A diphyodont is any animal with two sets of teeth initially the deciduous set and consecutively the permanent set 1 2 3 Most mammals are diphyodonts as to chew their food they need a strong durable and complete set of teeth Diphyodonts contrast with polyphyodonts whose teeth are constantly replaced Diphyodonts also differ from monophyodonts which are animals who have only one set of teeth that do not change over a long period of growth 4 In diphyodonts the number of teeth that are replaced varies from species to species In humans a set of twenty deciduous teeth or milk teeth are replaced by a completely new set of thirty two adult teeth In some cases hypodontia or hyperdontia occurs the latter in cleidocranial dysostosis and Gardner s syndrome In the hare the anterior incisors are not replaced but the posterior smaller incisors are replaced Not much is known about the developmental mechanisms regulating diphyodont replacement The house shrew Suncus murinus and the Chinese miniature pig 5 6 are currently being used to study the diphyodont replacement of the deciduous dentition by replacements and additional permanent teeth Manatees elephants and kangaroos differ from most other mammals because they are polyphyodonts See also editHeterodont Polyphyodont Schultz s rule Thecodont dentition MonophyodontReferences edit Buchtova M Stembirek J Glocova K Matalova E Tucker A S 2012 Early Regression of the Dental Lamina Underlies the Development of Diphyodont Dentitions Journal of Dental Research 91 5 491 498 doi 10 1177 0022034512442896 PMID 22442052 Myers P R Espinosa C S Parr T Jones G S Hammond and T A Dewey 2013 Milk teeth and the replacement of teeth The Animal Diversity Web Early mammal teeth pag 13 Cutting John WHY DO SOME ANIMALS HAVE MULTIPLE SETS OF TEETH Edgewater Dental Arts Retrieved 7 April 2021 Otevrit soubor Masarykova univerzita in Czech Wang F Xiao J Cong W Li A Song T Wei F Xu J Zhang C Fan Z Wang S May 2013 Morphology and chronology of diphyodont dentition in miniature pigs Sus Scrofa Oral Diseases 20 4 367 379 doi 10 1111 odi 12126 PMID 23679230 nbsp This zoology related article is a stub You can help Wikipedia by expanding it vte Retrieved from https en wikipedia org w index php title Diphyodont amp oldid 1130712942, wikipedia, wiki, book, books, library,
